Вот такое сегодня предложила китаянка Alice from sinbosen за $762.
FP20000Q 4000 Watt 4 Channel Professional Bass Power Amplifier Dual 18 Inch Subwoofer
8Ω Stereo Power (RMS): 2250W X 4
4Ω Stereo Power (RMS): 4000W X 4
8Ω Bridged Power (RMS): 80000W X 2
Frequency Response(+o/-0.3dB,1W/8Ω)：20 Hz - 34 kHz
THD 20 Hz - 20 kHz for 1 W：<0.1%
Signal-to-Noise Ratio：>112 dBA
Channel separation (Crosstalk) at 1 kHz ：>70 dB
Input Connectors (per channel)：3 pin XLR, electronically balanced
Output Connectors (per channel)：Binding Posts 2-pole
Class：TD
TourClass Protection：ACL, IGM, AutoRamp, short circuit, DC voltage, turn on/off transient, current inrush, sub/ultrasonic input
Operating voltage, 220 V / 110 V nominal：180-240 V / 90-130 V selectable
Voltage Gain(dB)：23, 26, 29, 32, 35, 38, 41, 44 dB selectable
Input impedance：20 kOhm
Level adjustment (per ch.)：Front panel potentiometer, 31 positions detented from -inf to 0 dB FP20000Q some materials information as follows:
✔ Extended 42mm heatsink, longer and thicker.
✔ Use the original "Onsemi" and "Fairchild" transistor.
✔ Use high-quality fans from Taiwan.
✔ Use the original "Siemens" capacitors.
- 12pcs 3600uf/200V
- 8pcs 2200uf/200V
✔ Use Switzerland XLR Brand -- Neutrik.